并行基坑施工对邻近桥梁影响及保护措施

doi:10.16265/j.cnki.issn1003-3033.2023.03.0685

中国安全科学学报 ›› 2023, Vol. 33 ›› Issue (3): 68-74.doi: 10.16265/j.cnki.issn1003-3033.2023.03.0685

并行基坑施工对邻近桥梁影响及保护措施

张仲宇¹(), 李兆平²^,^**(), 杨航², 龙奇峰¹, 冯超¹

¹ 北京市市政四建设工程有限责任公司,北京 100176
² 北京交通大学土木建筑工程学院,北京 100044

收稿日期:2022-10-10 修回日期:2023-01-12 出版日期:2023-03-28 发布日期:2023-11-28
通讯作者: **李兆平(1966—),男,安徽马鞍山人,博士,教授,主要从事地下工程设计理论与施工关键技术方面的研究。E-mail: zhpli@bjtu.edu.cn。
作者简介:
张仲宇 (1988—),男,山东烟台人,本科,高级工程师,主要从事轨道交通工程施工技术工作。E-mail: 295768140@qq.com。
基金资助:
北京市政建设集团有限责任公司科技研究开发计划项目(2019-03)

Study on influence of parallel foundation pit construction on adjacent bridge and protection measures

ZHANG Zhongyu¹(), LI Zhaoping²^,^**(), YANG Hang², LONG Qifeng¹, FENG Chao¹

¹ Beijing No.4 Municipal Construction Engineering Co., Ltd., Beijing 100176, China
² School of Civil & Architecture Engineering, Beijing Jiaotong University, Beijing 100044, China

Received:2022-10-10 Revised:2023-01-12 Online:2023-03-28 Published:2023-11-28

摘要/Abstract

摘要：

以高铁清河火车站配套人行通道和公交通道并行基坑侧穿G7高速清河桥为例,研究并行基坑开挖对邻近桥梁的影响及保护措施。首先,考虑并行基坑开挖的空间效应,建立有限元数值模型,分析基坑开挖对邻近桥梁桩基础的叠加影响。计算结果表明:由于并行基坑开挖对桥梁桩基础扰动的叠加效应,导致桥梁墩柱的绝对沉降、差异沉降和倾斜等指标均超过控制值;结合数值模拟结果和类似工程经验,提出对邻近桥梁采用钻孔灌注桩作为隔离桩的保护措施,根据并行基坑施工对邻近桥梁不同部位的影响差异,给出隔离桩的平面布置。邻近桥梁墩柱变形实测表明隔离桩能有效约束基坑开挖的叠加效应,保证G7高速清河桥的安全运行。

关键词: 并行基坑, 邻近桥梁, 保护措施, 隔离桩, 数值模拟

Abstract:

Taking the parallel foundation pit of pedestrian passage and bus passage attached to Qinghe railway station of high-speed railway passing through G7 high-speed Qinghe bridge as an example, the influence of parallel foundation pit excavation on adjacent bridges and the protection measures were studied. Firstly, considering the spatial effect of parallel foundation pit excavation, a finite element numerical model was established to analyze the superimposition effect of foundation pit excavation on adjacent bridge pile foundation. The calculation results show that the absolute settlement, differential settlement and inclination of the bridge piers all exceed the control values due to the superposition effect of the bridge pile disturbance caused by the excavation of the foundation pit. Combined with numerical simulation results and the similar engineering construction experience, a protective measure of using bored piles as isolation piles for adjacent bridges is proposed, and the layout of isolation piles is given according to the difference of influence of parallel foundation pit construction on different parts of adjacent bridges. The measured deformation results of adjacent bridge piers show that the isolation piles effectively constrain the superposition effect of foundation pit excavation and ensure the safe operation of G7 high-speed Qinghe bridge.

Key words: parallel foundation pit, adjacent bridge, protective measures, isolation pile, numerical simulation

张仲宇, 李兆平, 杨航, 龙奇峰, 冯超. 并行基坑施工对邻近桥梁影响及保护措施[J]. 中国安全科学学报, 2023, 33(3): 68-74.

ZHANG Zhongyu, LI Zhaoping, YANG Hang, LONG Qifeng, FENG Chao. Study on influence of parallel foundation pit construction on adjacent bridge and protection measures[J]. China Safety Science Journal, 2023, 33(3): 68-74.

图/表 18

图1

图2

图3

图4

表1

表2

图5

图6

图7

图8

图9

图10

图11

图12

图13

图14

图15

图16

参考文献 12

[1]	姜谙男, 塔拉, 李鹏. 邻近桥桩地铁车站施工数值模拟及敏感性分析[J]. 岩土工程学报, 2013, 35(增2): 1151-1154.
	JIANG Annan, TA La, LI Peng. Numerical simulation and sensitivity analysis for construction of metro station near bridge pile[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(S2): 1151-1154.
[2]	李兵, 马宁. 地铁深基坑开挖对邻近桥桩的影响分析[J]. 昆明理工大学学报:自然科学版, 2018, 43(2): 107-113.
	LI Bing, MA Ning. An analysis of the influence of subway station deep foundation pit construction on the adjacent piles[J]. Journal of Kunming University of Science and Technology:Natural Science, 2018, 43(2): 107-113.
[3]	李兆平, 汪挺, 项彦勇, 等. 北京地铁工程邻近桥桩施工风险评估及控制对策探讨[J]. 岩土力学, 2008, 29(7):1837-1842.
	LI Zhaoping, WANG Ting, XIANG Yanyong, et al. A study on risk grade classification method and disposal measures for adjacent bridge piles in Beijing Metro engineering[J]. Rock and Soil Mechanics, 2008, 29(7): 1837-1842.
[4]	凌同华, 张胜, 李升冉, 等. 邻近隧道施工既有桥桩变形控制及注浆加固方案优化[J]. 中南大学学报:自然科学版, 2014, 45(7): 2394-2400.
	LING Tonghua, ZHANG Sheng, LI Shengran, et al. Controlling of existing bridge piles deformation induced by adjacent tunneling and scheme of optimizing grouting reinforcement[J]. Journal of Central South University: Science and Technology, 2014, 45(7): 2394-2400.
[5]	吴昊, 姚顺意, 薛勋强, 等. 基于渗流应力耦合的基坑降水及开挖对邻近桥桩的影响分析[J]. 公路交通科技, 2019, 36(10): 59-66.
	WU Hao, YAO Shunyi, XUE Xunqiang, et al. Analysis on influence of foundation pit dewatering and excavation on adjacent bridge piles based on seepage stress coupling[J]. Journal of Highway and Transportation Research and Development, 2019, 36(10): 59-66.
[6]	胡军. 深基坑开挖对邻近既有高铁桩基影响研究[J]. 铁道工程学报, 2017, 34(6): 12-17.
	HU Jun. Research on the influence of excavation of deep foundation pit to adjacent existing high-speed railway bridge pile foundations stability[J]. Journal of Railway Engineering Society, 2017, 34(6): 12-17.
[7]	郭涛, 王海涛, 祁可录, 等. 流固耦合作用下基坑开挖对邻近桥桩的影响分析[J]. 施工技术:中英文, 2022, 51(2): 87-92.
	GUO Tao, WANG Haitao, QI Kelu, et al. Analysis on influence of foundation excavation on adjacent bridge piles considering fluid-solid coupling of soils[J]. Construction Technology, 2022, 51(2): 87-92.
[8]	刘欣然, 李兆平, 张存, 等. 考虑地层蠕变特性的盾构隧道施工对邻近桥桩影响和保护措施[J]. 中国安全生产科学技术, 2021, 17(10): 79-84.
	LIU Xinran, LI Zhaoping, ZHANG Cun, et al. Influence and protection measures of shield tunnel construction on adjacent bridge piles considering creep characteristics of stratum[J]. Journal of Safety Science and Technology, 2021, 17(10): 79-84.
[9]	安玉红. CSM水泥土搅拌隔离桩在地铁基坑紧邻桥桩时的保护效果研究[J]. 铁道标准设计, 2017, 61(5): 135-138.
	AN Yuhong. Study of the protective effect of partition wall (CSN) in metro foundation pit adjacent to bridge pile[J]. Railway Standard Design, 2017, 61(5): 135-138.
[10]	吕高峰, 刘德国. 复合锚杆桩加固桥梁桩基方案分析[J]. 都市快轨交通, 2013, 26(5): 79-82.
	LYU Gaofeng, LIU Deguo. Analysis on the reinforcement strategies for bridge pile foundation with composite bolt piles[J]. Urban Rapid Rail Transit, 2013, 26(5): 79-82.
[11]	赵晓勇. 地铁盾构隧道侧穿高铁桥群桩设置隔离桩影响分析[J]. 城市轨道交通研究, 2021, 24(5): 116-120.
	ZHAO Xiaoyong. Influence analysis of setting separation piles for metro shield tunnel side-crossing high-speed railway bridge pile groups[J]. Urban Mass Transit, 2021, 24(5): 116-120.
[12]	李杰. 盾构下穿高铁桥群钻孔灌注桩隔离加固技术[J]. 公路, 2018, 63(1): 262-270.
	LI Jie. Drilling piles isolation and reinforcement technology for shield driving through high-speed railway bridge group[J]. Highway, 2018, 63(1): 262-270.

土层	厚度/ m	重度/ (kN·m^-3)	黏聚力/ kPa	内摩擦角/ (°)	泊松比 υ	压缩模量/ MPa
杂填土①	3.0	16.5	0	10	0.20	3.0
粉土②	4.2	19.3	18	30.6	0.25	9.8
黏土③	3.8	18.5	13	8.1	0.35	5.0
粉质黏土③	3.0	19.4	19	10.9	0.30	6.0
细砂中砂④	4.8	20.0	0	30	0.25	35.0
粉土⑤₁	8.2	20.3	10	30.1	0.25	21.3
细砂⑤₁	53	20.0	0	30	0.20	45

结构形式	材料	重度/ (kN·m^-3)	弹性模量/GPa	泊松比υ
混凝土横撑钻孔灌注桩冠梁	C30混凝土 C30混凝土 C30混凝土	24.5 24.5 24.5	30 30 30	0.25 0.25 0.25
钢支撑	Q235B	87	206	0.25
隔离桩	C30混凝土	24.5	30	0.25
喷混凝土	C25混凝土	24	28	0.2
墩柱	C50混凝土	25	32.5	0.3
承台	C40混凝土	25	32.5	0.25
桥桩	C30混凝土	24.5	30	0.25

[1]	赵鹏翔, 常泽晨, 李树刚, 卓日升, 林海飞, 金士魁. 厚煤层采空区定向孔分域抽采研究及应用[J]. 中国安全科学学报, 2023, 33(1): 70-79.
[2]	王文才, 李俊鹏, 王创业, 陈世江, 王鹏, 李仕璋. 不同开采工况诱发边坡变形与时效稳定性分析[J]. 中国安全科学学报, 2022, 32(S1): 72-78.
[3]	张志伟, 张国维, 朱国庆, 袁狄平, 郭栋. 基于Fluent的地下管廊液氮灭火数值模拟方法*[J]. 中国安全科学学报, 2022, 32(8): 133-139.
[4]	李刚, 刘海振, 杨庆贺, 牛伟锋. 带压开采煤层底板破坏特征与突水风险分析[J]. 中国安全科学学报, 2022, 32(5): 68-76.
[5]	郑艾辰, 向晋扬, 黄锋, 金成昊, 刘星辰. 空洞对隧道结构安全影响试验与模拟[J]. 中国安全科学学报, 2022, 32(5): 119-126.
[6]	游波, 毛聪, 施式亮, 刘何清, 鲁义, 李敏. 矿用通风服微空间环境变化特征研究[J]. 中国安全科学学报, 2022, 32(5): 185-193.
[7]	冯巩, 夏元友, 王智德, 严敏嘉. 基于位移信息融合的露天矿边坡动态预警方法[J]. 中国安全科学学报, 2022, 32(3): 116-122.
[8]	王凯, 胡经纬, 杨涛, 蔡炜垚, 王建华, 陈瑞鼎. 地铁站火灾烟流特性及协同集控系统[J]. 中国安全科学学报, 2022, 32(12): 133-140.
[9]	廖慧敏, 苏红, 朱逸龙, 李明. 赤铁矿矿尘在人体呼吸道运动的模拟[J]. 中国安全科学学报, 2022, 32(12): 165-173.
[10]	姚勇征, 宋恪斌, 史聪灵, 任飞, 李建, 车洪磊. 纵向通风下T型分岔隧道火灾烟气蔓延特性[J]. 中国安全科学学报, 2022, 32(10): 115-120.
[11]	张国维, 刘淳元, 张志伟, 张相华, 袁狄平. 城市极端爆炸事故引发周边建筑火蔓延行为研究[J]. 中国安全科学学报, 2022, 32(10): 171-177.
[12]	任青阳, 陈斌, 孟欣, 靳红华, 卞林林, 郑仕跃. 基于改进Green-Ampt模型的边坡渗水破坏分析[J]. 中国安全科学学报, 2022, 32(10): 57-62.
[13]	鲁义, 杨帆, 刘欢, 陈健, 王金鹏, 李文辉. 气凝胶消防救援服内衬的热阻计算[J]. 中国安全科学学报, 2022, 32(1): 201-207.
[14]	张钧祥, 刘彦伟, 任培良, 韩红凯, 左伟芹. 基于蠕变效应的穿层钻孔封孔参数优化与试验研究[J]. 中国安全科学学报, 2021, 31(7): 97-104.
[15]	丁厚成, 连志虚, 邓权龙, 蒋仲安, 杨利炜, 葛梦圆. 振弦栅与高压喷雾协同作用下除尘特性研究^*[J]. 中国安全科学学报, 2021, 31(6): 106-112.

并行基坑施工对邻近桥梁影响及保护措施

Study on influence of parallel foundation pit construction on adjacent bridge and protection measures

RichHTML

PDF

可视化

摘要/Abstract

引用本文

使用本文

图/表 18

参考文献 12

相关文章 15

编辑推荐

Metrics

本文评价